A beta of the new customer portal is available at https://github.com/SonarSoftwareInc/customer_portal
I would not currently replace your existing portal with this one until you’ve tested it out and you’re happy with it. We have a bit of clean up to do and there’s a handful of minor bugs (mostly around error messaging if you don’t set it up properly, but we’re still testing it fully in house.)
That being said, if you want to give it a shot, we have a few ISPs already using it and I think it is fairly stable. Please note that this is a beta release and not fully supported yet so use it as your own risk.